Need help with serpentine belt size on powerdyne supercharged mustang - Mustang Evolution

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Old 06-24-2015, 09:11 PM   #1
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Need help with serpentine belt size on powerdyne supercharged mustang

Hey guys I bought a KO60875 stock 5.0 belt but it doesn't seem to slip on no matter how hard I pull the tensioner..I'm not sure if it's the right belt or maybe I'm doing something wrong, my car has no deletions except for the alternator being moved down to the bottom and I believe the smog pump right on top, anyone know what size of or serpentine belt number I need?? Need help asap..thanks!

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Old 06-25-2015, 02:05 PM   #2
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If its a 8-9psi kit with stock crank pulley,my buddies 92 uses the
Goodyear gator belt part #4060500
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Old 06-25-2015, 02:27 PM   #3
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I still wrap that pulley around the crankshaft pulley right? Because in front of it there's another pulley but that goes with the belt that goes to the supercharger

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Old 06-26-2015, 12:32 PM   #4
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Use a piece of string and wrap it around then measure it. Boom done.

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Old 06-26-2015, 08:48 PM   #5
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Actually measure the string when the tensioner is almost bottomed out.


Powerdynes are notorious for belt slip and all parts are OOP unfortunately.
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Old 06-29-2015, 04:35 PM   #6
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Quote:
Originally Posted by baynotch650 View Post
I still wrap that pulley around the crankshaft pulley right? Because in front of it there's another pulley but that goes with the belt that goes to the supercharger

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Sorry I read your post again and realized I gave you the part # for the crank pulley to supercharger pulley belt.You're looking for the drive belt part # that goes around everything but the supercharger pulley.It should be a OEM length belt unless you've changed accessory,crank,smog pump pullies to a size different from stock(I.E.under drive pulleys,etc)
Your crank pulley probably has another pulley installed into it so that the inside belt runs around the crank/wp/smog pump/alternator/ac & tensioner pullies then the outside belt runs around the supercharger/tensioner & extended crank pullies.I would use the string trick to measure since the stock length belt you've tried doesn't fit.One of your pullies must be larger/smaller than OEM size,otherwise your belt should fit.
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